Physical channel/ Scheduling changes

nfapi/open-nFAPI/nfapi/public_inc/nfapi_nr_interface.h

@@ -14,6 +14,8 @@
 
 #define NFAPI_NR_MAX_NB_CCE_AGGREGATION_LEVELS 5
 #define NFAPI_NR_MAX_NB_TCI_STATES_PDCCH 64
+#define NFAPI_NR_MAX_NB_CORESETS 12
+#define NFAPI_NR_MAX_NB_SEARCH_SPACES 40
 
 // Extension to the generic structures for single tlv values
 typedef struct {

openair1/PHY/NR_TRANSPORT/nr_dci_tools.c

@@ -62,7 +62,8 @@ void nr_fill_cce_list(NR_gNB_DCI_ALLOC_t* dci_alloc, uint16_t n_shift, uint8_t m
   }
 
   uint8_t cond = N_reg%(bsize*R);
-  AssertFatal(cond==0, "CCE to REG interleaving: Invalid configuration leading to non integer C\n");
+  AssertFatal(cond==0, "CCE to REG interleaving: Invalid configuration leading to non integer C (N_reg %d, bsize %d R %d)\n",
+  N_reg, bsize, R);
   C = N_reg/(bsize*R);
 
   tmp = L * (( Y + (m*N_cce)/(L*M_s_max) + n_CI ) % (N_cce/L));

openair1/SCHED_NR/phy_procedures_nr_gNB.c

@@ -204,14 +204,14 @@ void phy_procedures_gNB_TX(PHY_VARS_gNB *gNB,
                           gNB->nr_gold_pdcch_dmrs[slot],
                           gNB->common_vars.txdataF[0],
                           AMP, *fp, *cfg);
-      if (num_pdsch_rnti) {
+      /*if (num_pdsch_rnti) {
         LOG_I(PHY, "PDSCH generation started (%d)\n", num_pdsch_rnti);
         nr_generate_pdsch(*gNB->dlsch[0][0],
                           gNB->pdcch_vars.dci_alloc[0],
                           gNB->nr_gold_pdsch_dmrs[slot],
                           gNB->common_vars.txdataF,
                           AMP, slot, *fp, *cfg);
-      }
+      }*/
     }
   }
   VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME(VCD_SIGNAL_DUMPER_FUNCTIONS_PHY_PROCEDURES_ENB_TX+offset,0);

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler.c

@@ -322,6 +322,16 @@ void gNB_dlsch_ulsch_scheduler(module_id_t module_idP,
 
       nfapi_nr_config_request_t *cfg = &RC.nrmac[module_idP]->config[CC_id];
 
+      nfapi_nr_coreset_t coreset = RC.nrmac[module_idP]->coreset[CC_id][1];
+      nfapi_nr_search_space_t search_space = RC.nrmac[module_idP]->search_space[CC_id][1];
+
+      if (nr_is_dci_opportunity(search_space,
+                                    coreset,
+                                    frameP,
+                                    slotP,
+                                    *cfg))
+          nr_schedule_uss_dlsch_phytest(module_idP, frameP, slotP);
+
       rnti = UE_RNTI(module_idP, i);
       CC_id = UE_PCCID(module_idP, i);
       int spf = get_spf(cfg);
@@ -424,9 +434,11 @@ void gNB_dlsch_ulsch_scheduler(module_id_t module_idP,
 
   // Phytest scheduling/ option not activated because of pending bug
 
-  if (slotP==2)
-    nr_schedule_css_dlsch_phytest(module_idP, frameP, slotP);
+  /*if (slotP==2)
+    nr_schedule_css_dlsch_phytest(module_idP, frameP, slotP);*/
 
+  if (slotP==2)
+  nr_schedule_uss_dlsch_phytest(module_idP, frameP, slotP);
 
   /*
   // Allocate CCEs for good after scheduling is done

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_phytest.c

@@ -180,3 +180,147 @@ void nr_schedule_css_dlsch_phytest(module_id_t   module_idP,
     
   }
 }
+
+/*Scheduling of DLSCH with associated DCI in user specific search space
+ * current version has only a DCI for type 1 PDCCH for C_RNTI*/
+void nr_schedule_uss_dlsch_phytest(module_id_t   module_idP,
+                                   frame_t       frameP,
+                                   sub_frame_t   slotP)
+{
+  uint8_t  CC_id;
+
+  gNB_MAC_INST                        *nr_mac      = RC.nrmac[module_idP];
+  //NR_COMMON_channels_t                *cc           = nr_mac->common_channels;
+  nfapi_nr_dl_config_request_body_t   *dl_req;
+  nfapi_nr_dl_config_request_pdu_t  *dl_config_dci_pdu;
+  nfapi_nr_dl_config_request_pdu_t  *dl_config_dlsch_pdu;
+  nfapi_tx_request_pdu_t            *TX_req;
+
+  nfapi_nr_config_request_t *cfg = &nr_mac->config[0];
+  uint16_t rnti = 0x1234;
+
+  uint16_t sfn_sf = frameP << 7 | slotP;
+  int dl_carrier_bandwidth = cfg->rf_config.dl_carrier_bandwidth.value;
+
+  // everything here is hard-coded to 30 kHz
+  int scs = get_dlscs(cfg);
+  int slots_per_frame = get_spf(cfg);
+  for (CC_id=0; CC_id<MAX_NUM_CCs; CC_id++) {
+    LOG_I(MAC, "Scheduling UE specific search space DCI type 1 for CC_id %d\n",CC_id);
+
+    nfapi_nr_coreset_t* coreset = &nr_mac->coreset[CC_id][1];
+    nfapi_nr_search_space_t* search_space = &nr_mac->search_space[CC_id][1];
+
+    dl_req = &nr_mac->DL_req[CC_id].dl_config_request_body;
+    dl_config_dci_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu];
+    memset((void*)dl_config_dci_pdu,0,sizeof(nfapi_nr_dl_config_request_pdu_t));
+    dl_config_dci_pdu->pdu_type = NFAPI_NR_DL_CONFIG_DCI_DL_PDU_TYPE;
+    dl_config_dci_pdu->pdu_size = (uint8_t)(2+sizeof(nfapi_nr_dl_config_dci_dl_pdu));
+
+    dl_config_dlsch_pdu = &dl_req->dl_config_pdu_list[dl_req->number_pdu+1];
+    memset((void*)dl_config_dlsch_pdu,0,sizeof(nfapi_nr_dl_config_request_pdu_t));
+    dl_config_dlsch_pdu->pdu_type = NFAPI_NR_DL_CONFIG_DLSCH_PDU_TYPE;
+    dl_config_dlsch_pdu->pdu_size = (uint8_t)(2+sizeof(nfapi_nr_dl_config_dlsch_pdu));
+
+    nfapi_nr_dl_config_dci_dl_pdu_rel15_t *pdu_rel15 = &dl_config_dci_pdu->dci_dl_pdu.dci_dl_pdu_rel15;
+    nfapi_nr_dl_config_pdcch_parameters_rel15_t *params_rel15 = &dl_config_dci_pdu->dci_dl_pdu.pdcch_params_rel15;
+    nfapi_nr_dl_config_dlsch_pdu_rel15_t *dlsch_pdu_rel15 = &dl_config_dlsch_pdu->dlsch_pdu.dlsch_pdu_rel15;
+
+    dlsch_pdu_rel15->start_prb = 0;
+    dlsch_pdu_rel15->n_prb = 50;
+    dlsch_pdu_rel15->start_symbol = 2;
+    dlsch_pdu_rel15->nb_symbols = 8;
+    dlsch_pdu_rel15->rnti = rnti;
+    dlsch_pdu_rel15->nb_layers =1;
+    dlsch_pdu_rel15->nb_codewords = 1;
+    dlsch_pdu_rel15->mcs_idx = 9;
+    dlsch_pdu_rel15->ndi = 1;
+    dlsch_pdu_rel15->redundancy_version = 0;
+
+
+    nr_configure_dci_from_pdcch_config(params_rel15,
+                                       coreset,
+                                       search_space,
+                                       cfg);
+
+    pdu_rel15->frequency_domain_assignment = get_RIV(dlsch_pdu_rel15->start_prb, dlsch_pdu_rel15->n_prb, cfg->rf_config.dl_carrier_bandwidth.value);
+    pdu_rel15->time_domain_assignment = get_SLIV(dlsch_pdu_rel15->start_symbol, dlsch_pdu_rel15->nb_symbols);
+    pdu_rel15->vrb_to_prb_mapping = 1;
+    pdu_rel15->mcs = 9;
+    pdu_rel15->tb_scaling = 1;
+
+    pdu_rel15->ra_preamble_index = 25;
+    pdu_rel15->format_indicator = 1;
+    pdu_rel15->ndi = 1;
+    pdu_rel15->rv = 0;
+    pdu_rel15->harq_pid = 0;
+    pdu_rel15->dai = 2;
+    pdu_rel15->tpc = 2;
+    pdu_rel15->pucch_resource_indicator = 7;
+    pdu_rel15->pdsch_to_harq_feedback_timing_indicator = 7;
+
+    LOG_I(MAC, "[gNB scheduler phytest] DCI type 1 payload: freq_alloc %d, time_alloc %d, vrb to prb %d, mcs %d tb_scaling %d ndi %d rv %d\n",
+                pdu_rel15->frequency_domain_assignment,
+                pdu_rel15->time_domain_assignment,
+                pdu_rel15->vrb_to_prb_mapping,
+                pdu_rel15->mcs,
+                pdu_rel15->tb_scaling,
+                pdu_rel15->ndi,
+                pdu_rel15->rv);
+
+    params_rel15->rnti = rnti;
+    params_rel15->rnti_type = NFAPI_NR_RNTI_C;
+    params_rel15->dci_format = NFAPI_NR_DL_DCI_FORMAT_1_0;
+    //params_rel15->aggregation_level = 1;
+    LOG_I(MAC, "DCI type 1 params: rmsi_pdcch_config %d, rnti %d, rnti_type %d, dci_format %d\n \
+                coreset params: mux_pattern %d, n_rb %d, n_symb %d, rb_offset %d  \n \
+                ss params : nb_ss_sets_per_slot %d, first symb %d, nb_slots %d, sfn_mod2 %d, first slot %d\n",
+                0,
+                params_rel15->rnti,
+                params_rel15->rnti_type,
+                params_rel15->dci_format,
+                params_rel15->mux_pattern,
+                params_rel15->n_rb,
+                params_rel15->n_symb,
+                params_rel15->rb_offset,
+                params_rel15->nb_ss_sets_per_slot,
+                params_rel15->first_symbol,
+                params_rel15->nb_slots,
+                params_rel15->sfn_mod2,
+                params_rel15->first_slot);
+  nr_get_tbs(&dl_config_dlsch_pdu->dlsch_pdu, dl_config_dci_pdu->dci_dl_pdu, *cfg);
+  LOG_I(MAC, "DLSCH PDU: start PRB %d n_PRB %d start symbol %d nb_symbols %d nb_layers %d nb_codewords %d mcs %d\n",
+  dlsch_pdu_rel15->start_prb,
+  dlsch_pdu_rel15->n_prb,
+  dlsch_pdu_rel15->start_symbol,
+  dlsch_pdu_rel15->nb_symbols,
+  dlsch_pdu_rel15->nb_layers,
+  dlsch_pdu_rel15->nb_codewords,
+  dlsch_pdu_rel15->mcs_idx);
+
+  dl_req->number_dci++;
+  dl_req->number_pdsch_rnti++;
+  dl_req->number_pdu+=2;
+
+  TX_req = &nr_mac->TX_req[CC_id].tx_request_body.tx_pdu_list[nr_mac->TX_req[CC_id].tx_request_body.number_of_pdus];
+  TX_req->pdu_length = 6;
+  TX_req->pdu_index = nr_mac->pdu_index[CC_id]++;
+  TX_req->num_segments = 1;
+  TX_req->segments[0].segment_length = 8;
+  nr_mac->TX_req[CC_id].tx_request_body.number_of_pdus++;
+  nr_mac->TX_req[CC_id].sfn_sf = sfn_sf;
+  nr_mac->TX_req[CC_id].tx_request_body.tl.tag = NFAPI_TX_REQUEST_BODY_TAG;
+  nr_mac->TX_req[CC_id].header.message_id = NFAPI_TX_REQUEST;
+
+  TX_req = &nr_mac->TX_req[CC_id].tx_request_body.tx_pdu_list[nr_mac->TX_req[CC_id].tx_request_body.number_of_pdus+1];
+  TX_req->pdu_length = dlsch_pdu_rel15->transport_block_size;
+  TX_req->pdu_index = nr_mac->pdu_index[CC_id]++;
+  TX_req->num_segments = 1;
+  TX_req->segments[0].segment_length = 8;
+  nr_mac->TX_req[CC_id].tx_request_body.number_of_pdus++;
+  nr_mac->TX_req[CC_id].sfn_sf = sfn_sf;
+  nr_mac->TX_req[CC_id].tx_request_body.tl.tag = NFAPI_TX_REQUEST_BODY_TAG;
+  nr_mac->TX_req[CC_id].header.message_id = NFAPI_TX_REQUEST;
+
+  }
+}

openair2/LAYER2/NR_MAC_gNB/gNB_scheduler_primitives.c

@@ -351,18 +351,19 @@ void nr_configure_dci_from_pdcch_config(nfapi_nr_dl_config_pdcch_parameters_rel1
 /// coreset
 
   //ControlResourceSetId
-  pdcch_params->config_type = (coreset->coreset_id==0)?NFAPI_NR_CSET_CONFIG_PDCCH_CONFIG_CSET_0: NFAPI_NR_CSET_CONFIG_PDCCH_CONFIG;
+  pdcch_params->config_type = (coreset->coreset_id==0)?NFAPI_NR_CSET_CONFIG_MIB_SIB1: NFAPI_NR_CSET_CONFIG_PDCCH_CONFIG;
   
   //frequencyDomainResources
   uint8_t count=0, start=0, start_set=0;
   uint64_t bitmap = coreset->frequency_domain_resources;
-  for (int i=0; i<64; i++)
-    if ((bitmap>>(63-i))&1) {
+  for (int i=0; i<45; i++)
+    if ((bitmap>>(44-i))&1) {
       count++;
-      if (!start_set)
+      if (!start_set) {
         start = i;
         start_set = 1;
       }
+    }
   pdcch_params->rb_offset = 6*start;
   pdcch_params->n_rb = 6*count;
 
@@ -374,9 +375,15 @@ void nr_configure_dci_from_pdcch_config(nfapi_nr_dl_config_pdcch_parameters_rel1
   if (pdcch_params->cr_mapping_type == NFAPI_NR_CCE_REG_MAPPING_INTERLEAVED) {
     pdcch_params->reg_bundle_size = coreset->reg_bundle_size;
     pdcch_params->interleaver_size = coreset->interleaver_size;
-    pdcch_params->shift_index = coreset->shift_index;
+  }
+  else {
+    pdcch_params->reg_bundle_size = 6;
+    pdcch_params->interleaver_size = 1;
   }
 
+  //shift index
+  pdcch_params->shift_index = coreset->shift_index;
+
   //precoderGranularity
   pdcch_params->precoder_granularity = coreset->precoder_granularity;
 
@@ -389,11 +396,16 @@ void nr_configure_dci_from_pdcch_config(nfapi_nr_dl_config_pdcch_parameters_rel1
 
 /// SearchSpace
 
-  // first symbol and duration
+  // first symbol
   //AssertFatal(pdcch_scs==kHz15, "PDCCH SCS above 15kHz not allowed if a symbol above 2 is monitored");
   for (int i=0; i<get_symbolsperslot(&cfg); i++)
-    if ((search_space->monitoring_symbols_in_slot>>(15-i))&1)
+    if ((search_space->monitoring_symbols_in_slot>>(15-i))&1) {
       pdcch_params->first_symbol=i;
+      break;
+    }
+
+  //searchSpaceType
+  pdcch_params->search_space_type = search_space->search_space_type;
 
 /*
   //searchSpaceId
@@ -413,8 +425,7 @@ void nr_configure_dci_from_pdcch_config(nfapi_nr_dl_config_pdcch_parameters_rel1
   //nrofCandidates
   pdcch_params->aggregation_level = (uint8_t)number_of_candidates[NFAPI_NR_MAX_NB_CCE_AGGREGATION_LEVELS - 1];
 
-  //searchSpaceType
-  pdcch_params->search_space_type = search_space->search_space_type;
+
   //Common_CSS
   if (pdcch_params->search_space_type == NFAPI_NR_SEARCH_SPACE_TYPE_COMMON){
     switch(search_space->css_formats_0_0_and_1_0){
@@ -500,7 +511,7 @@ int nr_is_dci_opportunity(nfapi_nr_search_space_t search_space,
   uint16_t Os=search_space.slot_monitoring_offset;
   uint8_t Ts=search_space.duration;
 
-  if (((frame*get_spf(&cfg) + slot - Os)%Ks)==Ts)
+  if (((frame*get_spf(&cfg) + slot - Os)%Ks)<Ts)
     is_dci_opportunity=1;
 
   return is_dci_opportunity;
@@ -536,3 +547,7 @@ int get_symbolsperslot(nfapi_nr_config_request_t *cfg) {
   return ((cfg->subframe_config.dl_cyclic_prefix_type.value==NFAPI_CP_EXTENDED)?12:14);
 
 }
+
+int nr_schedule_dci() {
+  
+}

openair2/LAYER2/NR_MAC_gNB/main.c

@@ -44,6 +44,32 @@
 extern RAN_CONTEXT_t RC;
 
 
+void nr_init_coreset(nfapi_nr_coreset_t *coreset) {
+
+  coreset->coreset_id = 1;
+  coreset->frequency_domain_resources = 0x1FE00000000; // 48 RB starting from CRB0
+  coreset->duration = 2;
+  coreset->cce_reg_mapping_type = NFAPI_NR_CCE_REG_MAPPING_NON_INTERLEAVED;
+  coreset->precoder_granularity = NFAPI_NR_CSET_ALL_CONTIGUOUS_RBS;
+  coreset->tci_present_in_dci = 0;
+  coreset->dmrs_scrambling_id = 0;
+}
+
+void nr_init_search_space(nfapi_nr_search_space_t *search_space) {
+
+  search_space->search_space_id = 1;
+  search_space->coreset_id = 1;
+  search_space->search_space_type = NFAPI_NR_SEARCH_SPACE_TYPE_UE_SPECIFIC;
+  search_space->duration = 5;
+  search_space->slot_monitoring_periodicity = NFAPI_NR_SS_PERIODICITY_SL10;
+  search_space->slot_monitoring_offset = 1;
+  search_space->monitoring_symbols_in_slot = 0xC0000000; // first 2 ofdm symbols
+  search_space->css_formats_0_0_and_1_0 = 1;
+  search_space->uss_dci_formats = 0; // enum to be defined-- formats 0.0 and 1.0
+  for (int i=0; i<NFAPI_NR_MAX_NB_CCE_AGGREGATION_LEVELS; i++)
+    search_space->number_of_candidates[i] = 4; // TODO
+}
+
 void mac_top_init_gNB(void)
 {
   module_id_t     i,j;
@@ -85,6 +111,10 @@ void mac_top_init_gNB(void)
         RC.nrmac[i]->HI_DCI0_req[j].hi_dci0_request_body.hi_dci0_pdu_list = RC.nrmac[i]->hi_dci0_pdu_list[j];
         RC.nrmac[i]->TX_req[j].tx_request_body.tx_pdu_list =                RC.nrmac[i]->tx_request_pdu[j];
         RC.nrmac[i]->ul_handle = 0;
+
+        // Init PDCCH structures
+        nr_init_coreset(&RC.nrmac[i]->coreset[j][1]);
+        nr_init_search_space(&RC.nrmac[i]->search_space[j][1]);
         }
         
 

openair2/LAYER2/NR_MAC_gNB/nr_mac_gNB.h

@@ -138,6 +138,10 @@ typedef struct gNB_MAC_INST_s {
   nfapi_tx_request_pdu_t            tx_request_pdu[NFAPI_CC_MAX][MAX_NUM_TX_REQUEST_PDU];
   /// NFAPI DL PDU structure
   nfapi_tx_request_t                TX_req[NFAPI_CC_MAX];
+  /// NFAPI coreset structure
+  nfapi_nr_coreset_t                coreset[NFAPI_CC_MAX][NFAPI_NR_MAX_NB_CORESETS];
+  /// NFAPI search space structure
+  nfapi_nr_search_space_t           search_space[NFAPI_CC_MAX][NFAPI_NR_MAX_NB_SEARCH_SPACES];
 
   UE_list_t UE_list;